/* ============================================
   盛德金行官方网站 - 全局样式
   配色: 冷调灰蓝 #E8F0F2 + 暖木色 #D9C2A1 + 黑白
   风格: 现代简约 · 商务专业
   ============================================ */

/* === CSS Variables === */
:root {
  --color-primary: #B2ECFF;
  --color-primary-dark: #8DD8F0;
  --color-wood: #D9C2A1;
  --color-wood-light: #E8D9C4;
  --color-wood-dark: #C4AD8A;
  --color-black: #281D1E;
  --color-white: #FFFFFF;
  --color-gray-50: #F8F9FA;
  --color-gray-100: #F1F3F5;
  --color-gray-200: #E9ECEF;
  --color-gray-300: #DEE2E6;
  --color-gray-400: #CED4DA;
  --color-gray-500: #ADB5BD;
  --color-gray-600: #6C757D;
  --color-gray-700: #495057;
  --color-gray-800: #343A40;
  --color-gray-900: #212529;
  
  --font-primary: 'Noto Serif SC', 'Source Han Serif SC', Georgia, 'Times New Roman', serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'SF Mono', 'Cascadia Code', monospace;
  
  --max-width: 1200px;
  --header-height: 72px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
  --shadow-xl: 0 16px 48px rgba(0,0,0,0.16);
}

/* === Reset & Base === */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  color: var(--color-gray-900);
  background: var(--color-white);
  line-height: 1.6;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: opacity var(--transition);
}
a:hover { opacity: 0.7; }

ul { list-style: none; }

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.02em;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  position: relative;
  display: inline-block;
}
.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--color-wood);
  margin-top: 12px;
  border-radius: 2px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-gray-600);
  max-width: 600px;
  line-height: 1.7;
}

/* === Container === */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* === Header === */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
  z-index: 1000;
  transition: all var(--transition);
}
.header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-primary);
}

.logo-mark {
  width: 40px;
  height: 40px;
  background: var(--color-black);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 1px;
}

.logo-text {
  display: flex;
  flex-direction: column;
}
.logo-text-cn {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 4px;
  color: var(--color-black);
}
.logo-text-en {
  font-size: 0.65rem;
  letter-spacing: 2px;
  color: var(--color-gray-500);
  text-transform: uppercase;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.header-nav a {
  font-size: 0.9rem;
  color: var(--color-gray-700);
  position: relative;
  padding: 4px 0;
  font-weight: 500;
  transition: color var(--transition);
}
.header-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-wood);
  transition: width var(--transition);
}
.header-nav a:hover { color: var(--color-black); }
.header-nav a:hover::after { width: 100%; }
.header-nav a.active { color: var(--color-black); }
.header-nav a.active::after { width: 100%; }

/* Mobile Menu Button */
.menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  border: none;
  background: none;
  cursor: pointer;
  position: relative;
  z-index: 1001;
}
.menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-black);
  margin: 6px auto;
  transition: all var(--transition);
  border-radius: 2px;
}
.menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.menu-btn.active span:nth-child(2) {
  opacity: 0;
}
.menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* === Hero Section === */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  background: linear-gradient(160deg, #B2ECFF 0%, #D4F4FF 35%, var(--color-white) 65%, var(--color-wood-light) 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(217,194,161,0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(232,240,242,0.4) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 120px 24px 80px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-text h1 {
  font-size: 3.5rem;
  line-height: 1.2;
  margin-bottom: 8px;
}
.hero-text h1 .highlight {
  color: var(--color-wood-dark);
}
.hero-text .sub-brand {
  font-size: 1.1rem;
  letter-spacing: 6px;
  color: var(--color-gray-500);
  text-transform: uppercase;
  margin-bottom: 24px;
  font-family: var(--font-body);
  font-weight: 400;
}
.hero-text p {
  font-size: 1.1rem;
  color: var(--color-gray-600);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  gap: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  font-family: var(--font-body);
}
.btn-primary {
  background: linear-gradient(135deg, #281D1E 0%, #3D2C2E 50%, #281D1E 100%);
  color: var(--color-white);
}
.btn-primary:hover {
  background: var(--color-gray-800);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.btn-outline {
  background: transparent;
  color: var(--color-black);
  border: 2px solid var(--color-black);
}
.btn-outline:hover {
  background: linear-gradient(135deg, #281D1E 0%, #3D2C2E 50%, #281D1E 100%);
  color: var(--color-white);
  transform: translateY(-2px);
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-card {
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(12px);
  border-radius: 20px;
  padding: 40px;
  border: 1px solid rgba(255,255,255,0.8);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 420px;
}

.hero-card-title {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--color-gray-500);
  margin-bottom: 16px;
}

.gold-price-display {
  margin-bottom: 24px;
}
.gold-price-value {
  font-size: 3rem;
  font-weight: 700;
  font-family: var(--font-primary);
  color: var(--color-black);
  line-height: 1;
}
.gold-price-value .unit {
  font-size: 1.2rem;
  color: var(--color-gray-500);
  font-weight: 400;
  margin-left: 4px;
}
.gold-price-change {
  font-size: 0.9rem;
  margin-top: 8px;
}
.gold-price-change.up { color: #2E7D32; }
.gold-price-change.down { color: #C62828; }

.hero-card-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding-top: 20px;
  border-top: 1px solid var(--color-gray-200);
}
.stat-item {
  text-align: center;
}
.stat-number {
  font-size: 1.5rem;
  font-weight: 700;
  font-family: var(--font-primary);
  color: var(--color-black);
}
.stat-label {
  font-size: 0.8rem;
  color: var(--color-gray-500);
  margin-top: 2px;
}

/* === Gold Price Ticker === */
.gold-ticker {
  background: linear-gradient(135deg, #281D1E 0%, #3D2C2E 50%, #281D1E 100%);
  color: var(--color-white);
  padding: 10px 0;
  overflow: hidden;
  position: relative;
}
.gold-ticker-track {
  display: flex;
  gap: 48px;
  animation: ticker 30s linear infinite;
  white-space: nowrap;
}
.gold-ticker-item {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 0.85rem;
  font-family: var(--font-mono);
}
.gold-ticker-item .label {
  color: var(--color-gray-400);
}
.gold-ticker-item .value {
  font-weight: 600;
}
.gold-ticker-item .change.up { color: #4CAF50; }
.gold-ticker-item .change.down { color: #EF5350; }

@keyframes ticker {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* === Sections Common === */
.section {
  padding: 100px 0;
}
.section-header {
  text-align: center;
  margin-bottom: 60px;
}
.section-header .section-title::after {
  margin: 12px auto 0;
}
.section-header .section-subtitle {
  margin: 16px auto 0;
}

.section-light {
  background: linear-gradient(180deg, #F8FAFB 0%, #F0F4F8 100%);
}
.section-primary {
  background: linear-gradient(135deg, #B2ECFF 0%, #D4F4FF 100%);
}
.section-wood {
  background: linear-gradient(135deg, var(--color-wood-light) 0%, #F5EDE0 100%);
}

/* === About Preview Section === */
.about-preview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  background: linear-gradient(135deg, #B2ECFF 0%, #D4F4FF 100%);
  border-radius: 16px;
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}
.about-image .placeholder {
  color: var(--color-gray-400);
  font-size: 1rem;
  text-align: center;
  padding: 20px;
}

.about-text h2 {
  font-size: 2rem;
  margin-bottom: 20px;
}
.about-text p {
  color: var(--color-gray-600);
  line-height: 1.8;
  margin-bottom: 16px;
}

/* === Services Grid === */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--color-white);
  border-radius: 16px;
  padding: 36px;
  border: 1px solid var(--color-gray-200);
  transition: all var(--transition);
  cursor: default;
}
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(178,236,255,0.2);
  border-color: #B2ECFF;
}

.service-icon {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, #B2ECFF 0%, #D4F4FF 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.service-card h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
}
.service-card p {
  color: var(--color-gray-600);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* === Stats Section === */
.stats-section {
  background: linear-gradient(135deg, #281D1E 0%, #3D2C2E 50%, #281D1E 100%);
  color: var(--color-white);
  padding: 80px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stats-item .stat-number {
  font-size: 2.8rem;
  color: var(--color-wood);
  font-family: var(--font-primary);
  display: block;
  margin-bottom: 8px;
}
.stats-item .stat-label {
  color: var(--color-gray-400);
  font-size: 0.9rem;
}

/* === News Section === */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-card {
  background: var(--color-white);
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--color-gray-200);
  transition: all var(--transition);
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.news-image {
  height: 200px;
  background: linear-gradient(135deg, #B2ECFF 0%, #D4F4FF 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-400);
  font-size: 0.9rem;
}

.news-body {
  padding: 24px;
}
.news-date {
  font-size: 0.8rem;
  color: var(--color-gray-500);
  margin-bottom: 8px;
}
.news-body h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
  line-height: 1.4;
}
.news-body p {
  font-size: 0.9rem;
  color: var(--color-gray-600);
  line-height: 1.6;
}

/* === CTA Section === */
.cta-section {
  background: linear-gradient(160deg, var(--color-wood-light) 0%, #D4F4FF 50%, var(--color-primary) 100%);
  text-align: center;
  padding: 100px 0;
}
.cta-section h2 {
  font-size: 2.5rem;
  margin-bottom: 16px;
}
.cta-section p {
  color: var(--color-gray-600);
  font-size: 1.1rem;
  margin-bottom: 36px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* === Footer === */
.footer {
  background: linear-gradient(135deg, #281D1E 0%, #3D2C2E 50%, #281D1E 100%);
  color: var(--color-white);
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .logo-text-cn {
  color: var(--color-white);
}
.footer-brand p {
  color: var(--color-gray-500);
  font-size: 0.9rem;
  margin-top: 16px;
  line-height: 1.7;
  max-width: 300px;
}

.footer-col h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-gray-500);
  margin-bottom: 20px;
  font-family: var(--font-body);
}
.footer-col a {
  display: block;
  color: var(--color-gray-400);
  font-size: 0.9rem;
  margin-bottom: 12px;
  transition: color var(--transition);
}
.footer-col a:hover {
  color: var(--color-white);
  opacity: 1;
}

.footer-bottom {
  border-top: 1px solid var(--color-gray-800);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--color-gray-500);
}

/* === Back to Top === */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, #281D1E 0%, #3D2C2E 50%, #281D1E 100%);
  color: var(--color-white);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  box-shadow: var(--shadow-md);
  z-index: 999;
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}
.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* === Page Hero (Inner Pages) === */
.page-hero {
  padding: 140px 0 60px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-white) 100%);
  text-align: center;
}
.page-hero h1 {
  font-size: 2.8rem;
  margin-bottom: 12px;
}
.page-hero p {
  color: var(--color-gray-600);
  font-size: 1.05rem;
  max-width: 500px;
  margin: 0 auto;
}

/* === Contact Page === */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.contact-info h2 {
  font-size: 1.8rem;
  margin-bottom: 24px;
}
.contact-info p {
  color: var(--color-gray-600);
  line-height: 1.8;
  margin-bottom: 32px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.contact-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, #B2ECFF 0%, #D4F4FF 100%);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.contact-item h4 {
  font-size: 0.9rem;
  margin-bottom: 4px;
}
.contact-item p {
  font-size: 0.9rem;
  color: var(--color-gray-600);
  margin-bottom: 0;
}

.contact-form {
  background: var(--color-white);
  border-radius: 16px;
  padding: 40px;
  border: 1px solid var(--color-gray-200);
  box-shadow: var(--shadow-md);
}
.contact-form h3 {
  font-size: 1.3rem;
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-gray-700);
  margin-bottom: 6px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--color-gray-200);
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: var(--font-body);
  transition: border-color var(--transition);
  background: var(--color-white);
  color: var(--color-gray-900);
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #B2ECFF;
  box-shadow: 0 0 0 3px rgba(178,236,255,0.2);
}
.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

/* === Services Page === */
.services-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
}
.services-detail-card {
  background: var(--color-white);
  border-radius: 16px;
  padding: 40px;
  border: 1px solid var(--color-gray-200);
}
.services-detail-card h3 {
  font-size: 1.3rem;
  margin-bottom: 16px;
}
.services-detail-card p {
  color: var(--color-gray-600);
  line-height: 1.8;
  margin-bottom: 12px;
}
.services-detail-card ul {
  margin-top: 12px;
}
.services-detail-card ul li {
  padding: 6px 0;
  padding-left: 20px;
  position: relative;
  color: var(--color-gray-600);
  font-size: 0.95rem;
}
.services-detail-card ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 14px;
  width: 8px;
  height: 8px;
  background: var(--color-wood);
  border-radius: 50%;
}

/* === About Page === */
.about-content {
  max-width: 800px;
  margin: 0 auto;
}
.about-content h2 {
  font-size: 1.8rem;
  margin-bottom: 20px;
  margin-top: 48px;
}
.about-content h2:first-child {
  margin-top: 0;
}
.about-content p {
  color: var(--color-gray-600);
  line-height: 1.9;
  margin-bottom: 16px;
  font-size: 1.05rem;
}

.about-values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 40px 0;
}
.value-card {
  text-align: center;
  padding: 32px 20px;
  background: linear-gradient(135deg, #B2ECFF 0%, #D4F4FF 100%);
  border-radius: 16px;
}
.value-card .icon {
  font-size: 2rem;
  margin-bottom: 16px;
}
.value-card h4 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}
.value-card p {
  color: var(--color-gray-600);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* === News Page === */
.news-list {
  max-width: 800px;
  margin: 0 auto;
}
.news-list-item {
  padding: 32px 0;
  border-bottom: 1px solid var(--color-gray-200);
  transition: all var(--transition);
  cursor: pointer;
}
.news-list-item:hover {
  padding-left: 16px;
}
.news-list-item:last-child {
  border-bottom: none;
}
.news-list-item .date {
  font-size: 0.8rem;
  color: var(--color-gray-500);
  margin-bottom: 8px;
}
.news-list-item h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
  transition: color var(--transition);
}
.news-list-item:hover h3 {
  color: var(--color-wood-dark);
}
.news-list-item p {
  color: var(--color-gray-600);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* === Mobile Nav Overlay === */
.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 998;
  opacity: 0;
  transition: opacity var(--transition);
}
.mobile-overlay.show {
  display: block;
  opacity: 1;
}

/* === Animations === */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}



/* === Luxury Text Effects (Gold/Silver Foil) === */
.gold-text {
  background: linear-gradient(135deg, #C5A55A 0%, #F5E6B8 25%, #D4AF37 50%, #F5E6B8 75%, #C5A55A 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% 200%;
  animation: goldShine 3s ease-in-out infinite;
}
.silver-text {
  background: linear-gradient(135deg, #C0C0C0 0%, #F0F0F0 25%, #E8E8E8 50%, #F0F0F0 75%, #C0C0C0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% 200%;
  animation: goldShine 3s ease-in-out infinite;
}
@keyframes goldShine {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

/* Light Auction Hero */
.auction-hero-light {
  min-height: 90vh;
  display: flex;
  align-items: center;
  position: relative;
  background: linear-gradient(160deg, #B2ECFF 0%, #D4F4FF 30%, #F0FAFF 55%, var(--color-wood-light) 100%);
  overflow: hidden;
}
.auction-hero-light::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(217,194,161,0.12) 0%, transparent 60%);
  border-radius: 50%;
  pointer-events: none;
}
.auction-hero-light::after {
  content: '';
  position: absolute;
  bottom: -20%;
  left: -5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(178,236,255,0.2) 0%, transparent 60%);
  border-radius: 50%;
  pointer-events: none;
}
.auction-hero-light-content {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 140px 24px 80px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: center;
}

.auction-hero-light .hero-tag {
  display: inline-block;
  background: rgba(40,29,30,0.06);
  color: var(--color-black);
  padding: 6px 18px;
  border-radius: 20px;
  font-size: 0.75rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 20px;
  border: 1px solid rgba(40,29,30,0.08);
  font-weight: 600;
}
.auction-hero-light h1 {
  font-size: 3.5rem;
  line-height: 1.15;
  margin-bottom: 12px;
  color: var(--color-black);
}
.auction-hero-light .sub-brand {
  font-size: 0.9rem;
  letter-spacing: 6px;
  color: rgba(40,29,30,0.4);
  text-transform: uppercase;
  margin-bottom: 20px;
  font-weight: 400;
}
.auction-hero-light p {
  font-size: 1.05rem;
  color: rgba(40,29,30,0.6);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 500px;
}

.auction-hero-light .btn-primary {
  background: var(--color-black);
  color: var(--color-white);
}
.auction-hero-light .btn-primary:hover {
  background: #3D2C2E;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.auction-hero-light .btn-outline {
  background: transparent;
  color: var(--color-black);
  border: 2px solid rgba(40,29,30,0.3);
}
.auction-hero-light .btn-outline:hover {
  border-color: var(--color-black);
  background: rgba(40,29,30,0.05);
}

/* Light featured lot card */
.lot-card-light {
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(20px);
  border-radius: 16px;
  padding: 32px;
  border: 1px solid rgba(255,255,255,0.8);
  box-shadow: 0 8px 40px rgba(178,236,255,0.15);
}
.lot-card-light .label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: rgba(40,29,30,0.35);
  margin-bottom: 16px;
  font-weight: 600;
}
.lot-card-light .lot-image {
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, var(--color-wood-light), #F0FAFF);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(40,29,30,0.3);
  margin-bottom: 20px;
  font-size: 0.9rem;
  overflow: hidden;
}
.lot-card-light .lot-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.lot-card-light .lot-title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 4px;
  font-family: var(--font-primary);
  color: var(--color-black);
}
.lot-card-light .lot-meta {
  color: rgba(40,29,30,0.45);
  font-size: 0.85rem;
  margin-bottom: 16px;
}
.lot-card-light .lot-estimate {
  font-size: 1.4rem;
  font-weight: 700;
  font-family: var(--font-primary);
}
.lot-card-light .lot-countdown {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(40,29,30,0.06);
  display: flex;
  gap: 16px;
}
.lot-card-light .countdown-item .num {
  font-size: 1.5rem;
  font-weight: 700;
  font-family: var(--font-mono);
  display: block;
}

@media (max-width: 1024px) {
  .auction-hero-light-content { grid-template-columns: 1fr; text-align: center; }
  .auction-hero-light p { margin: 0 auto 32px; }
  .auction-hero-light .hero-actions { justify-content: center; }
}
@media (max-width: 768px) {
  .auction-hero-light h1 { font-size: 2.2rem; }
  .auction-hero-light-content { padding: 100px 24px 60px; }
  .lot-card-light .lot-countdown { flex-wrap: wrap; }
}

/* === Auction House Specific Styles === */

/* Featured Lot Hero */
.auction-hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  position: relative;
  background: linear-gradient(160deg, #281D1E 0%, #3D2C2E 40%, #5C4A3A 70%, var(--color-wood-dark) 100%);
  overflow: hidden;
  color: var(--color-white);
}
.auction-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" opacity="0.05"><text x="50" y="55" text-anchor="middle" font-size="80" fill="white" font-family="serif">&#9830;</text></svg>') repeat;
  background-size: 120px 120px;
  pointer-events: none;
}
.auction-hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 140px 24px 80px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: center;
}

.auction-hero-tag {
  display: inline-block;
  background: rgba(217,194,161,0.2);
  color: var(--color-wood);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.8rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 20px;
  border: 1px solid rgba(217,194,161,0.3);
}
.auction-hero h1 {
  font-size: 3.2rem;
  line-height: 1.2;
  margin-bottom: 8px;
}
.auction-hero h1 .highlight {
  color: var(--color-wood);
}
.auction-hero .sub-brand {
  font-size: 1rem;
  letter-spacing: 6px;
  color: var(--color-gray-400);
  text-transform: uppercase;
  margin-bottom: 24px;
  font-weight: 400;
}
.auction-hero p {
  font-size: 1.05rem;
  color: var(--color-gray-400);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 500px;
}

.auction-hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.auction-hero-actions .btn-primary {
  background: var(--color-wood);
  color: var(--color-black);
}
.auction-hero-actions .btn-primary:hover {
  background: var(--color-wood-dark);
  color: var(--color-black);
}
.auction-hero-actions .btn-outline-light {
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255,255,255,0.3);
}
.auction-hero-actions .btn-outline-light:hover {
  border-color: var(--color-white);
  background: rgba(255,255,255,0.1);
}

/* Featured Lot Card */
.featured-lot-card {
  background: rgba(255,255,255,0.06);
  backdrop-filter: blur(16px);
  border-radius: 16px;
  padding: 32px;
  border: 1px solid rgba(255,255,255,0.1);
}
.featured-lot-card .label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--color-gray-500);
  margin-bottom: 16px;
}
.featured-lot-card .lot-image {
  width: 100%;
  height: 200px;
  background: rgba(255,255,255,0.05);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-500);
  margin-bottom: 20px;
  font-size: 0.9rem;
}
.featured-lot-card .lot-title {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 4px;
  font-family: var(--font-primary);
}
.featured-lot-card .lot-meta {
  color: var(--color-gray-400);
  font-size: 0.85rem;
  margin-bottom: 16px;
}
.featured-lot-card .lot-estimate {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-wood);
  font-family: var(--font-primary);
}
.featured-lot-card .lot-estimate .note {
  font-size: 0.8rem;
  color: var(--color-gray-500);
  font-weight: 400;
}
.featured-lot-card .lot-countdown {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  gap: 16px;
}
.countdown-item {
  text-align: center;
}
.countdown-item .num {
  font-size: 1.5rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--color-wood);
  display: block;
}
.countdown-item .lbl {
  font-size: 0.7rem;
  color: var(--color-gray-500);
  text-transform: uppercase;
}

/* Section Divider */
.section-divider {
  text-align: center;
  padding: 20px 0 60px;
}
.section-divider .line {
  display: inline-block;
  width: 60px;
  height: 2px;
  background: var(--color-wood);
  margin: 0 12px;
  vertical-align: middle;
}
.section-divider .text {
  font-size: 0.75rem;
  letter-spacing: 4px;
  color: var(--color-gray-400);
  text-transform: uppercase;
  vertical-align: middle;
}

/* Auction Grid */
.auction-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.auction-card {
  background: var(--color-white);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--color-gray-200);
  transition: all var(--transition);
}
.auction-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.auction-card-image {
  height: 180px;
  background: linear-gradient(135deg, #B2ECFF 0%, #D4F4FF 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-400);
  font-size: 0.85rem;
}
.auction-card-body {
  padding: 20px;
}
.auction-card-body .date {
  font-size: 0.8rem;
  color: var(--color-gray-500);
  margin-bottom: 8px;
}
.auction-card-body h3 {
  font-size: 1rem;
  margin-bottom: 8px;
  line-height: 1.4;
}
.auction-card-body .meta {
  font-size: 0.85rem;
  color: var(--color-gray-600);
  margin-bottom: 4px;
}
.auction-card-body .status {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-top: 8px;
}
.status-upcoming {
  background: #E8F5E9;
  color: #2E7D32;
}
.status-ongoing {
  background: #FFF3E0;
  color: #E65100;
}
.status-closed {
  background: var(--color-gray-100);
  color: var(--color-gray-600);
}

/* Lot Grid (Homepage Featured Lots) */
.lot-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.lot-card {
  background: var(--color-white);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--color-gray-200);
  transition: all var(--transition);
}
.lot-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.lot-card-image {
  height: 160px;
  background: linear-gradient(135deg, #B2ECFF 0%, #D4F4FF 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-400);
  font-size: 0.8rem;
}
.lot-card-body {
  padding: 16px;
}
.lot-card-body .category {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-wood-dark);
  font-weight: 600;
  margin-bottom: 6px;
}
.lot-card-body h4 {
  font-size: 0.95rem;
  margin-bottom: 4px;
  line-height: 1.3;
}
.lot-card-body .estimate {
  font-size: 0.9rem;
  color: var(--color-gray-700);
  font-weight: 600;
}

/* How to Sell / Consign Section */
.consign-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin: 40px 0;
}
.consign-step {
  text-align: center;
  padding: 32px 20px;
}
.consign-step .step-num {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, #281D1E 0%, #3D2C2E 50%, #281D1E 100%);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 auto 16px;
  font-family: var(--font-primary);
}
.consign-step h4 {
  font-size: 1rem;
  margin-bottom: 8px;
}
.consign-step p {
  color: var(--color-gray-600);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* Auctions Page */
.auction-filters {
  display: flex;
  gap: 12px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.filter-btn {
  padding: 8px 20px;
  border: 1.5px solid var(--color-gray-300);
  border-radius: 20px;
  background: transparent;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--transition);
  color: var(--color-gray-700);
  font-family: var(--font-body);
}
.filter-btn:hover {
  border-color: var(--color-wood);
  color: var(--color-black);
}
.filter-btn.active {
  background: linear-gradient(135deg, #281D1E 0%, #3D2C2E 50%, #281D1E 100%);
  color: var(--color-white);
  border-color: var(--color-black);
}

/* Responsive */
@media (max-width: 1024px) {
  .auction-hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .auction-hero p { margin: 0 auto 32px; }
  .auction-hero-actions { justify-content: center; }
  .lot-grid { grid-template-columns: repeat(2, 1fr); }
  .consign-steps { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .auction-hero h1 { font-size: 2rem; }
  .auction-hero-content { padding: 100px 24px 60px; }
  .auction-grid { grid-template-columns: 1fr; }
  .lot-grid { grid-template-columns: repeat(2, 1fr); }
  .consign-steps { grid-template-columns: 1fr; }
  .featured-lot-card .lot-countdown { flex-wrap: wrap; }
}
@media (max-width: 480px) {
  .lot-grid { grid-template-columns: 1fr; }
}


/* === Treasure Chamber (Hidden Access) === */
.treasure-page {
  min-height: 100vh;
  background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 50%, #0d0d0d 100%);
  position: relative;
  overflow: hidden;
}
.treasure-page::before {
  content: '';
  position: fixed;
  inset: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(217,194,161,0.06) 0%, transparent 50%),
              radial-gradient(ellipse at 70% 50%, rgba(232,240,242,0.04) 0%, transparent 50%);
  pointer-events: none;
}

.treasure-header {
  text-align: center;
  padding: 60px 24px 20px;
  position: relative;
}
.treasure-header h1 {
  font-size: 2.8rem;
  color: var(--color-wood);
  font-family: var(--font-primary);
  letter-spacing: 8px;
  text-shadow: 0 0 40px rgba(217,194,161,0.3);
}
.treasure-header .sub {
  color: var(--color-gray-500);
  font-size: 0.8rem;
  letter-spacing: 6px;
  text-transform: uppercase;
  margin-top: 8px;
}
.treasure-header .divider {
  width: 80px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-wood), transparent);
  margin: 16px auto;
}

.treasure-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 960px;
  margin: 0 auto;
  padding: 20px 24px 60px;
}

.treasure-card {
  position: relative;
  aspect-ratio: 1;
  border-radius: 12px;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(217,194,161,0.15);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px;
}
.treasure-card:hover {
  transform: translateY(-8px) scale(1.02);
  border-color: rgba(217,194,161,0.4);
  box-shadow: 0 20px 60px rgba(217,194,161,0.15), inset 0 0 60px rgba(217,194,161,0.03);
}
.treasure-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(0,0,0,0.4) 100%);
  pointer-events: none;
}

.treasure-card .icon {
  font-size: 3.5rem;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 0 20px rgba(217,194,161,0.2));
}
.treasure-card .name {
  font-size: 0.85rem;
  color: var(--color-wood);
  letter-spacing: 2px;
  position: relative;
  z-index: 1;
  font-weight: 500;
}
.treasure-card .subname {
  font-size: 0.7rem;
  color: var(--color-gray-500);
  margin-top: 4px;
  position: relative;
  z-index: 1;
}
.treasure-card .hint {
  position: absolute;
  bottom: 12px;
  right: 12px;
  font-size: 0.6rem;
  color: rgba(217,194,161,0.3);
  letter-spacing: 1px;
  z-index: 2;
}

/* Individual card backgrounds */
.treasure-card:nth-child(1) { background: linear-gradient(135deg, #1a1200, #2a1a00); }
.treasure-card:nth-child(2) { background: linear-gradient(135deg, #001a12, #003020); }
.treasure-card:nth-child(3) { background: linear-gradient(135deg, #0a0a2a, #101050); }
.treasure-card:nth-child(4) { background: linear-gradient(135deg, #2a0000, #4a0000); }
.treasure-card:nth-child(5) { background: linear-gradient(135deg, #000a2a, #001850); }
.treasure-card:nth-child(6) { background: linear-gradient(135deg, #1a0a1a, #2a102a); }
.treasure-card:nth-child(7) { background: linear-gradient(135deg, #001a0a, #003018); }
.treasure-card:nth-child(8) { background: linear-gradient(135deg, #1a1a00, #2a2a00); }
.treasure-card:nth-child(9) { 
  background: linear-gradient(135deg, #1a0a00, #3a1a00);
  border-color: rgba(217,194,161,0.3);
  box-shadow: 0 0 30px rgba(217,194,161,0.1), inset 0 0 60px rgba(217,194,161,0.05);
}
.treasure-card:nth-child(9):hover {
  box-shadow: 0 20px 60px rgba(217,194,161,0.3), inset 0 0 60px rgba(217,194,161,0.08);
  border-color: var(--color-wood);
}

/* Sparkle animation */
@keyframes sparkle {
  0%, 100% { opacity: 0.3; transform: scale(0.8); }
  50% { opacity: 1; transform: scale(1.2); }
}
.treasure-card .sparkle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--color-wood);
  border-radius: 50%;
  animation: sparkle 2s ease-in-out infinite;
  box-shadow: 0 0 6px var(--color-wood);
}

/* Back button */
.treasure-back {
  position: fixed;
  top: 24px;
  left: 24px;
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-400);
  font-size: 1.2rem;
  cursor: pointer;
  transition: all var(--transition);
  z-index: 10;
  text-decoration: none;
}
.treasure-back:hover {
  background: rgba(255,255,255,0.1);
  color: var(--color-white);
  border-color: var(--color-wood);
}

/* Hidden link in about page */
.hidden-link {
  color: inherit;
  text-decoration: none;
  cursor: pointer;
  position: relative;
  transition: color 0.3s;
}
.hidden-link:hover {
  color: var(--color-wood-dark);
}
.hidden-link::after {
  content: '🔑';
  font-size: 0.6rem;
  margin-left: 4px;
  opacity: 0;
  transition: opacity 0.3s;
}
.hidden-link:hover::after {
  opacity: 0.6;
}

@media (max-width: 768px) {
  .treasure-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .treasure-header h1 { font-size: 2rem; }
  .treasure-card .icon { font-size: 2.5rem; }
}
@media (max-width: 480px) {
  .treasure-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .treasure-card { padding: 16px; }
}

/* === Responsive === */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-text p {
    margin: 0 auto 36px;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-card {
    margin: 0 auto;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
}

@media (max-width: 768px) {
  .header-nav {
    display: none;
  }
  .menu-btn {
    display: block;
  }
  .header-nav.mobile-open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    right: 0;
    width: 280px;
    height: 100vh;
    background: var(--color-white);
    padding: 100px 32px 32px;
    gap: 8px;
    z-index: 999;
    box-shadow: var(--shadow-xl);
    align-items: flex-start;
  }
  .header-nav.mobile-open a {
    font-size: 1.1rem;
    padding: 12px 0;
    width: 100%;
  }

  .hero-text h1 {
    font-size: 2.2rem;
  }
  .hero {
    min-height: auto;
  }
  .hero-content {
    padding: 100px 24px 60px;
  }

  .section {
    padding: 60px 0;
  }
  .section-title {
    font-size: 1.8rem;
  }

  .about-preview {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .services-grid {
    grid-template-columns: 1fr;
  }
  .news-grid {
    grid-template-columns: 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .services-detail-grid {
    grid-template-columns: 1fr;
  }
  .about-values {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
  .page-hero {
    padding: 100px 0 40px;
  }
  .page-hero h1 {
    font-size: 2rem;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats-item .stat-number {
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  .hero-text h1 {
    font-size: 1.8rem;
  }
  .gold-price-value {
    font-size: 2.2rem;
  }
  .hero-card {
    padding: 24px;
  }
  .contact-form {
    padding: 24px;
  }
}